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Fix issue 53

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git-svn-id: http://php-reader.googlecode.com/svn/trunk@213 51a70ab9-7547-0410-9469-37e369ee0574
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svollbehr
2011-04-30 08:08:50 +00:00
parent e952f43b6c
commit 88ad00fdd9
1 changed files with 324 additions and 0 deletions
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src/Zend/Media/Iso14496/Box/Tfra.php Normal file
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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @category Zend
* @package Zend_Media
* @subpackage ISO14496
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/**#@ @ignore */
require_once 'Zend/Media/Iso14496/FullBox.php';
/**#@-*/
/**
* The <i>Track Fragment Random Access Box<i> provides entries that contains the location and the presentation time of
* the random accessible sample. It indicates that the sample in the entry can be random accessed. Note that not every
* random accessible sample in the track needs to be listed in the table.
*
* The absence of this box does not mean that all the samples are sync samples. Random access information in the
* {@link Zend_Media_Iso14496_Box_Trun}, {@link Zend_Media_Iso14496_Box_Traf} and {@link Zend_Media_Iso14496_Box_Trex}
* shall be set appropriately regardless of the presence of this box.
*
* @category Zend
* @package Zend_Media
* @subpackage ISO14496
* @author Georges-Etienne Legendre <legege@legege.com>
* @author Sven Vollbehr <sven@vollbehr.eu>
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
final class Zend_Media_Iso14496_Box_Tfra extends Zend_Media_Iso14496_FullBox
{
/** @var integer */
private $_trackId;
/** @var Array */
private $_entries = array();
/**
* Constructs the class with given parameters and reads box related data
* from the ISO Base Media file.
*
* @param Zend_Io_Reader $reader The reader object.
* @param Array $options The options array.
*/
public function __construct($reader, &$options = array())
{
parent::__construct($reader, $options);
$this->_trackId = $this->_reader->readUInt32BE();
$reserved = (($tmp = $this->_reader->readUInt32BE()) >> 6) & 0x3ffffff;
$lengthSizeOfTrafNum = ($tmp >> 4) & 0x3;
$lengthSizeOfTrunNum = ($tmp >> 2) & 0x3;
$lengthSizeOfSampleNum = $tmp & 0x3;
$entryCount = $this->_reader->readUInt32BE();
for ($i = 0; $i < $entryCount; $i++) {
$entry = array();
if ($this->getVersion() == 1) {
$entry['time'] = $this->_reader->readInt64BE();
$entry['moofOffset'] = $this->_reader->readInt64BE();
} else {
$entry['time'] = $this->_reader->readUInt32BE();
$entry['moofOffset'] = $this->_reader->readUInt32BE();
}
switch ($lengthSizeOfTrafNum) {
case 0:
$entry['trafNumber'] = $this->_reader->readUInt8();
break;
case 1:
$entry['trafNumber'] = $this->_reader->readUInt16BE();
break;
case 2:
$entry['trafNumber'] = $this->_reader->readUInt32BE();
break;
case 3:
$entry['trafNumber'] = $this->_reader->readInt64BE();
break;
}
switch ($lengthSizeOfTrunNum) {
case 0:
$entry['trunNumber'] = $this->_reader->readUInt8();
break;
case 1:
$entry['trunNumber'] = $this->_reader->readUInt16BE();
break;
case 2:
$entry['trunNumber'] = $this->_reader->readUInt32BE();
break;
case 3:
$entry['trunNumber'] = $this->_reader->readInt64BE();
break;
}
switch ($lengthSizeOfSampleNum) {
case 0:
$entry['sampleNumber'] = $this->_reader->readUInt8();
break;
case 1:
$entry['sampleNumber'] = $this->_reader->readUInt16BE();
break;
case 2:
$entry['sampleNumber'] = $this->_reader->readUInt32BE();
break;
case 3:
$entry['sampleNumber'] = $this->_reader->readInt64BE();
break;
}
$this->_entries[] = $entry;
}
}
/**
* Returns the integer identifying the track ID.
*
* @return integer
*/
public function getTrackId()
{
return $this->_trackId;
}
/**
* Sets the integer identifying the track ID.
*
* @param integer $trackId The track ID.
*/
public function setTrackId($trackId)
{
$this->_trackId = $trackId;
}
/**
* Returns an array of entries. Each entry is an array containing the
* following keys.
* o time: is 32 or 64 bits integer that indicates the presentation time of the random access sample in units
* defined in the {@link Zend_Media_Iso14496_Box_Mdhd} of the associated track.
* o moofOffset: is 32 or 64 bits integer that gives the offset of the {@link Zend_Media_Iso14496_Box_Moof} used
* in this entry. Offset is the byte-offset between the beginning of the file and the beginning of the
* {@link Zend_Media_Iso14496_Box_Moof}.
* o trafNumber: indicates the {@link Zend_Media_Iso14496_Box_Traf} number that contains the random accessible
* sample. The number ranges from 1 (the first traf is numbered 1) in each {@link Zend_Media_Iso14496_Box_Moof},
* o trunNumber: indicates the {@link Zend_Media_Iso14496_Box_Trun} number that contains the random accessible
* sample. The number ranges from 1 in each {@link Zend_Media_Iso14496_Box_Traf}.
* o sampleNumber: indicates the sample number that contains the random accessible sample. The number ranges from
* 1 in each {@link Zend_Media_Iso14496_Box_Trun}.
*
* @return Array
*/
public function getEntries()
{
return $this->_entries;
}
/**
* Sets the array of entries. Each entry must be an array containing the
* following keys.
* o time: is 32 or 64 bits integer that indicates the presentation time of the random access sample in units
* defined in the {@link Zend_Media_Iso14496_Box_Mdhd} of the associated track.
* o moofOffset: is 32 or 64 bits integer that gives the offset of the {@link Zend_Media_Iso14496_Box_Moof} used
* in this entry. Offset is the byte-offset between the beginning of the file and the beginning of the
* {@link Zend_Media_Iso14496_Box_Moof}.
* o trafNumber: indicates the {@link Zend_Media_Iso14496_Box_Traf} number that contains the random accessible
* sample. The number ranges from 1 (the first traf is numbered 1) in each {@link Zend_Media_Iso14496_Box_Moof},
* o trunNumber: indicates the {@link Zend_Media_Iso14496_Box_Trun} number that contains the random accessible
* sample. The number ranges from 1 in each {@link Zend_Media_Iso14496_Box_Traf}.
* o sampleNumber: indicates the sample number that contains the random accessible sample. The number ranges from
* 1 in each {@link Zend_Media_Iso14496_Box_Trun}.
*
* @return Array
*/
public function setEntries($entries)
{
$this->_entries = $entries;
}
/**
* Returns the box heap size in bytes.
*
* @return integer
*/
public function getHeapSize()
{
$lengthSizes = $this->_getLengthSizes();
return parent::getHeapSize() + 12 +
count($this->_entries) * ($this->getVersion() == 1 ? 16 : 8) +
count($this->_entries) * ($lengthSizes['trafNum'] + 1) +
count($this->_entries) * ($lengthSizes['trunNum'] + 1) +
count($this->_entries) * ($lengthSizes['sampleNum'] + 1);
}
/**
* Writes the box data.
*
* @param Zend_Io_Writer $writer The writer object.
* @return void
*/
protected function _writeData($writer)
{
parent::_writeData($writer);
$lengthSizes = $this->_getLengthSizes();
$writer->writeUInt32BE($this->_trackId)
->writeUInt32BE
(($lengthSizes['trafNum'] << 4) | ($lengthSizes['trunNum'] << 2) | ($lengthSizes['sampleNum']))
->writeUInt32BE($entryCount = count($this->_entries));
for ($i = 0; $i < $entryCount; $i++) {
if ($this->getVersion() == 1) {
$writer->writeInt64BE($this->_entries[$i]['time'])
->writeInt64BE($this->_entries[$i]['mediaTime']);
} else {
$writer->writeUInt32BE($this->_entries[$i]['time'])
->writeInt32BE($this->_entries[$i]['moofOffset']);
}
switch ($lengthSizes['trafNum']) {
case 0:
$writer->writeUInt8($this->_entries[$i]['trafNumber']);
break;
case 1:
$writer->writeUInt16BE($this->_entries[$i]['trafNumber']);
break;
case 2:
$writer->writeUInt32BE($this->_entries[$i]['trafNumber']);
break;
case 3:
$writer->writeInt64BE($this->_entries[$i]['trafNumber']);
break;
}
switch ($lengthSizes['trunNum']) {
case 0:
$writer->writeUInt8($this->_entries[$i]['trunNumber']);
break;
case 1:
$writer->writeUInt16BE($this->_entries[$i]['trunNumber']);
break;
case 2:
$writer->writeUInt32BE($this->_entries[$i]['trunNumber']);
break;
case 3:
$writer->writeInt64BE($this->_entries[$i]['trunNumber']);
break;
}
switch ($lengthSizes['sampleNum']) {
case 0:
$writer->writeUInt8($this->_entries[$i]['sampleNumber']);
break;
case 1:
$writer->writeUInt16BE($this->_entries[$i]['sampleNumber']);
break;
case 2:
$writer->writeUInt32BE($this->_entries[$i]['sampleNumber']);
break;
case 3:
$writer->writeInt64BE($this->_entries[$i]['sampleNumber']);
break;
}
}
}
private function _getLengthSizes()
{
$maxTrafNum = $maxTrunNum = $maxSampleNum = 0;
foreach ($this->entries as $entry) {
if ($maxTrafNum < $entry['trafNumber']) {
$maxTrafNum = $entry['trafNumber'];
}
if ($maxTrunNum < $entry['trunNumber']) {
$maxTrunNum = $entry['trunNumber'];
}
if ($maxSampleNum < $entry['sampleNumber']) {
$maxSampleNum = $entry['sampleNumber'];
}
}
return array(
'trafNum' => $this->_getLengthSizeFromInteger($maxTrafNum),
'trunNum' => $this->_getLengthSizeFromInteger($maxTrunNum),
'sampleNum' => $this->_getLengthSizeFromInteger($maxSampleNum)
);
}
private function _getLengthSizeFromInteger($integer)
{
if ($integer <= 0xff) {
return 0;
} else if ($integer <= 0xffff) {
return 1;
} else if ($integer <= 0xffffffff) {
return 2;
} else {
return 3;
}
}
}